Apr 14, 2011 18:51 GMT  ·  By

The promise from Microsoft is that the next version of Internet Explorer mobile for Windows Phone is built to outperform rival browser on platforms such as Android and iOS (iPhone).

The Redmond company has already made this point in the past, but on the second day of MIX11 it underlined it again.

Joe Belfiore, corporate vice president of Windows Phone program management, was one of the top company executives that took the stage for the second day keynote at MIX11 and offered a demonstration involving Windows Phone 7, Android Nexus S and the iPhone 4.

The software giant was even kind enough to provide a snippet of the keynote’s on-demand video, which I made sure to include at the bottom of the screen.

The browser on the Windows Phone 7 device is Internet Explorer 9 Mobile, a flavor of the fully-fledged IE9, complete with hardware acceleration.

The test presented by Belfiore is designed to offer the world a comparison of HTML5 performance on Windows Phone 7, Android, and iPhone.

“Down at the bottom what you'll see is a frame rate. And you can see the hardware acceleration gets the Windows Phone frame rate up to 23 here. Android is going at 11, and the iPhone is at two,” he notes during the demonstration.

IE9 Mobile will be included in codenamed Mango, a major upgrade to Windows Phone 7 due sometime in the fall of 2011.

“The phone has IE9 built in, and the thing that we've done that's interesting is the core Web browsing engine on the phone that does HTML rendering and JavaScript and all that sort of stuff is the same code base moved over from the PC,” Belfiore stated.

“The same exact code that has just shipped and is now getting installed on tons and tons of PCs is the code base that will be on the phone.”